Free-breathing abdominal IVIM imaging

This study aims to apply intravoxel incoherent motion (IVIM) method to free-breathing abdomial imaging. Previous studies acquired diffusion-weighted imaging with prospective respiratory gating multiple averages, and 10 b values. We proposed to acquire images with 91 b values and no averages, and without respiratory-gating. We used a retrospective selection algorithm based on rejecting indexes calculated from fitting residuals. The spatial variations obtained using the proposed method was comparable to that obtained using the protocol presented in the previous study. We concluded that the proposed method is a useful alternative to the respiratory-gated acquisition methods and can be a practical method for abdominal IVIM imaging.

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